Improvement in water-motors



A. coATEs el 'P. KENNEDY.

PatentedJ.un-e-23,1874.

UNITED STATESu lPATENT OFFICE.

ABRAHAM COATES AND PATRICK KENNEDY, OF VATERTOVN, NEW YORK, ASSIGNORS OFONE-THIRD THEIR RIGHT TO CHARLES D. BINGHAM, OF

SAME PLACE.

IMPROVEMENT IN WATER-MOTORS.

Specification forming part of Letters Patent No. 152,338, dated June 23,1874; application filed March 21, 1874.

To all whom it may concern:

the county of Jefferson and State of New Yorli, have invented cert-ainnew and useful Improvements in `Tater-Motors and we do hereby declarethe following to be a full, clear, and exact description of the same,reference being had to the accompanying drawings, forming part of thisspecification, in which- Figures l and 3 are side elevations 5 and Fig.2 is a section through line rv x, Figs. l and 3.

Similarletters of referencein the accompanying drawings denote the sameparts.

Our invention relates to improvements in water-motors, which can also beused as a rotary pump, a rotary steam-engine, or a water-meter.

In that class ot' rotary pumps which may also be employed as rotarysteam-engines, in whichv the valves are made to slide back and forthradially in grooves by cams or other suitable means, the pressure of thewater or steam is exerted directly upon the face of the valves, therebyincreasing the friction of the sliding valves on the drum, and also onthe axis of the latter'.

To remedy this defect is one of the objects of our invention, and tothis end it consists in pivoting the valves in the eduction-recesses ofthe outer cylinder, and in so arranging' them that they receive thepressure ofthe water or steam endwise instead of crosswise, whereby thefriction of the valves on the drum is in a great degree obviated.

In the accompanying drawings, G represents the outer cylinder of arotary pump or steam-engine, made in the usual manner. D is the drum,the journal or axis a of which has its bearings in the side plates ofthe machine, supported by a suitable pedestal. The drum D is providedwith suitable bosses or projections` e e, which lit steam and watertight against the inner recess in the outer cylinder G, three beingemployed in the construction shown, though more may be used. A A are theinduction, and B B the eduction ports, connected with openings c c oneither side of the cylinder. Each induction-port is adjacent to aneduction-port, and the induction and eduction ports are arrangedopppsite each other on the cylinder, as' shown in the drawings. F F arevalves, pivoted at o o in recesses in the outer cylinder G, and H H aresprings attached to the cylinder, and bearing upon the upper surface ot'the valves, so as to force their bent ends down upon the drum D, andpreserve a water or steam tight joint between the lower edge of thehook-shaped valves F F and the drum D. The bent end of the valve abntsagainst a division-plate, d, between the induction and eduction ports,forming a steam or water ti ght joint therewith.

It will be seenfrom this construction and arrangement ot' the valvesthat they presen-t their ends to the current of steam or water. Thepressure ot' the currents upon the valves is, therefore, endwise, or inthe direction of the greatest resistance, and no binding` action is hadupon the valves, as in the ordinary construction of sliding valvesmoving in grooves, and the friction is reduced by the above-dcscribedconstruction.

The machine may be used as a water-motor, a rotary pump, a steam-motor,or, by attaching an indicator to the drum D, to denote the number ot'revolutions, it may be employed as a water-m eter.

The valves F F may be held against the surface of the wheel by a camoperating against the inside of rim of wheel, and acting either inconjunction with or independently of the spring.

fe claim as our invention- The valves F F, pivoted in the eductionportsB B, and abutting steam or water tight against the division-plates d d,and springs H H, in combination with the induction-ports A A, injuxtaposition with the eduction-ports and drum D, provided with thebosses c e, the whole constructed, arranged, and operating in the mannerand for the purposes set forth.

ABM. COATES.

fitnessesz PATRICK KENNEDY.

WM. R. BAKER, Louis Diss.

